Bjorn, the H pipe is allowing gas and air to be pushed at near 90 degree angles! You call that free flow? If you are buying NEW you truly must go with the lesser resistant X pipe crossover. :p
Geesh, for a nice quiet guy, you've really stirred up a hornets nest here!!
'68 428 HO M3 Monster, 4-on-the-floor! Need I say more?